Hello there, how about the 5 day Southern Australia Explorer? I don't know how to link it, sorry. It's a Princess cruise from Melbourne to Adelaide on December 14 this year and other departures as well. This one goes to Kangaroo Island-lots of excursions to lovely places, Phillip Island-the daytime excursions sound good but the main attraction is to see the little penguins on the beach in the evening. The other stop is Port Lincoln and I previously did the Rugged Coastline Discovery tour which was good and also walked around the town and the shoreline which is pretty. If you want to extend your cruise to 7 days it also heads back to Melbourne. If you go back to Melbourne then you can do the Spirit of the Coorong cruise from Adelaide which is one of my all time favourite excursions. Pretty drive through wine country and gorgeous scenery on the cruise to the mouth of the Murray River. The boat goes in a lock which was interesting and we also did an easy walk through the sand dunes to see the Southern Ocean. We were served a picnic lunch on the boat. All in all a great day. It was a wonderful cruise which we did in January 2020 but didn't get to Kangaroo Island due to the terrible bushfires at the time. I've been there on a different trip though. I hope this has been helpful. Cheers!